Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Is Kvco frequency dependant in VCO modeling?

Status
Not open for further replies.
J

jfyan

Full Member level 2
Joined
May 3, 2006
Messages
145
Helped
26
Reputation
52
Reaction score
4
Trophy points
1,298
Location
shanghai,china
Activity points
2,064
about VCO modeling

hi all,
we usesually model the voltage-controlled oscillator like this:

f=Kvco * Vc.
and Kvco is extracted by a dc sweep of Vc. but i want to question that whether Kvco is frequency dependent? if yes, why we ignore it?
thanks,
jeff
 

about VCO modeling

do you mean that when resonance frequency changes, the Kvco will change too ?
 

about VCO modeling

it's a function about frequency too.
kvco=f/vc.
 

about VCO modeling

yes, it is dependent on frequency,because it is defined as a slope of vco's characteristic at which Vc=0.
 

about VCO modeling

lonearization, u can always try to make a better model
 

about VCO modeling

I think your model just right when the vco is in its normal work range. It is not right if the vco is out of that range.
 

about VCO modeling

VCO has to work within certain range for the constant slope to be valid.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top